Marginal accuracy of computer-aided design- and computer-aided manufacturing-fabricated full-arch zirconia restoration

Figures & data

Figure 1 Stainless steel master model containing two anterior and two posterior abutments assembled on metal plate (A) in specific dimension (B).

Figure 2 Measurement of marginal discrepancy of full-arch restoration for master metal model (A) at the medial (Me) and lateral (La) sides of each abutment in the anterior–posterior (AP) and right–left (RL) direction (B).

Figure 3 Marginal accuracy of full-arch restoration at canine and molar abutments on the medial and lateral sides for different fabrication techniques.

Abbreviations: T_CM, traditional cast metal; D_Z3S, 3Shape digital fabricated zirconia; D_ZCS, Carestream digital fabricated zirconia; Ca, canine abutment; Ma, molar abutment; Me, medial side; La, lateral side.

Table 1 Mean, SD, and 95% confidence interval (CI) for marginal accuracy of full-arch restorations at canine and molar abutments on medial and lateral sides for different fabrication techniques

Group	Tech	Abut	Side	N	Marginal accuracy		95% CI
					Mean	SD	LL	UL
TCMCaMe	TCM	Ca	Me	40	50.00	2.91	46.91	49.98
TCMCaLa	TCM	Ca	La	40	48.45	4.12	48.46	51.53
TCMMaMe	TCM	Ma	Me	40	48.52	4.80	46.99	50.05
TCMMaLa	TCM	Ma	La	40	47.40	4.29	45.86	48.93
DZ3SCaMe	DZ3S	Ca	Me	40	56.72	4.97	57.21	60.28
DZ3SCaLa	DZ3S	Ca	La	40	52.27	6.34	52.81	55.88
DZ3SMaMe	DZ3S	Ma	Me	40	53.17	5.26	53.26	56.33
DZ3SMaLa	DZ3S	Ma	La	40	51.82	4.79	56.44	59.50
DZCSCaMe	DZCS	Ca	Me	40	58.75	5.19	55.19	58.25
DZCSCaLa	DZCS	Ca	La	40	54.35	4.92	50.74	53.80
DZCSMaMe	DZCS	Ma	Me	40	57.97	5.96	51.64	54.70
DZCSMaLa	DZCS	Ma	La	40	54.80	4.72	50.29	53.35

Abbreviations: T_CM, traditional cast metal; D_Z3S, 3Shape digital fabricated zirconia; D_ZCS, Carestream digital fabricated zirconia; Ca, canine abutment; Ma, molar abutment; Me, medial side; La, lateral side; Tech, technique, Abut, abutment, LL, lower limit; UL, upper limit.

Table 2 ANOVA for marginal accuracy of full-arch restorations at canine and molar abutments on medial and lateral sides for different fabrication techniques

Source	SS	df	MS	F	p
Corrected model	6,786.792	23	295.078	12.253	0.000
Intercept	1,340,910.208	1	1,340,910.208	55,683.003	0.000
Technique	5,061.354	2	2,530.677	105.090	0.000
Abutment	156.408	1	156.408	6.495	0.011
Side	1,000.808	3	333.603	13.853	0.000
Technique × abutment	68.404	2	34.202	1.420	0.243
Technique × side	269.579	6	44.930	1.866	0.085
Abutment × side	143.775	3	47.925	1.990	0.115
Technique × abutment × side	86.462	6	14.410	0.598	0.732
Error	10,981.000	456	24.081
Total	1,358,678.000	480
Corrected total	17,767.792	479

Abbreviations: ANOVA, analysis of variance; SS, sum of squares; df, degree of freedom; MS, mean square; F, F-ratio.

Figure 4 Marginal accuracy of full-arch restorations for different fabrication techniques.

Abbreviations: T_CM, traditional cast metal; D_Z3S, 3Shape digital fabricated zirconia; D_ZCS, Carestream digital fabricated zirconia.

Figure 5 Marginal accuracy of full-arch restorations at the canine and molar abutments for different techniques.

Abbreviations: T_CM, traditional cast metal; D_Z3S, 3Shape digital fabricated zirconia; D_ZCS, Carestream digital fabricated zirconia; Ca, canine abutment; Ma, molar abutment.

Figure 6 Marginal accuracy of full-arch restorations at medial and lateral sides of abutments for different fabrication techniques.

Abbreviations: T_CM, traditional cast metal; D_Z3S, 3Shape digital fabricated zirconia; D_ZCS, Carestream digital fabricated zirconia; Me, medial side; La, lateral side.